Improvement in tenoning-machine



f//CZ//y/m@ GRAPHER4 WASHINGTON D c r saw.

I i ihtitedtatwetwi @with `JOHN JQ'oURNAu'oF LYoNs, iowa.

Laim Patent No. 105,432, ma July 19,1870.

f :nuPmavznvrs:m' 1N TENQNINGQMAcHINE.

" `Schedule refe-ned to in these Letters Patent and making part' of thesame. i

I, J ON J GURNAN, of `fLyons, county of G1inton,

State vof Iowa, 'have invented a new and useful Improvement inTenoning-Machines, of which the following `is a description.

A )Nata-reef my Intention. A

My invention relates to the removing the upper arbor-and coping-toolfrom a tenoning-rnachine, and p y putting an arbor or shaft with asaw-set on it at an i Aangle to cnt a slotin' the ends of sash-rails, or`any,

piece that, has 'a1 double te'non, the machine cutting the shoulders,tenons,\and slot, all. at the same time, lthereby saving time `iu'handling the material. l.

Dscription of lheAccompany'iny Drawing. `Figure 1 is a perspective viewof the machine in the usual form, without my improvement.

Figure 2 is a vertical section through the `arbor and `Figure is a frontviewor'elevation of the device.'

v yfeneralvDescriptiom l Same letters refer to same parts in thedifferent figures; i i, i

. A is the arbor orshaft.

` B B, collars iittcd to shaft A, andfastened `with a O is the pulley.if D D arel theboxcs.

E,'tlie saw, set on an angle, onesidebeingl'an obtuseV angle, theopposite `eide an acute angleto the lineoftheshaft or arbor.

' `"H`]:lf,bevel collars to hold the saw in'position.

K, frame or head, to holdarbor, and is fastenedby "bolts throughapertures` m im; to frame of machine.

F, a nut, to hold collars in place.

an adjusting-screw to regulate the depth of cut.

'N, space for a post to pass through .for Ltoiw'ork against. l

O, a slotfcut bysaw E in a meeting-rail.

P, meeting-rail, with two shoulders and slot.

g S, fig. 1, place where the device is to be attachedto the machine.

Olie/ration.

Construct 4the arbor A so that it'will fit the head, that holds thecoping-cutter at S, iig. 1. 0n the lower end ot' this shaft or arbo;`fit a bevel collar, that will give the saw E an inclination that, inrotating, will out a groove'or slot 7 the requisite width.

Remove the coping-'arbor and put the one with the saw on in its place,and adjust it to the requiredplace to cut the groove or slot, as at O,tig. ,3f Give the saw motion from the same pulley that gave thecoping-tool motion.

Now, by putting in 'a rail that requires a groove or slot, or doubletenons, the horizontal cutters will cut the shoulders ontop and undersides, while atthe same time the 4saw will, by its inclination to theline v of'its shaft giving it a wabbling motion, out the necessarygroove or slot, without any extra handling of material, thereby savingmuch time.

C Zaini.

The arbor A, fitted with a; driving-pulley, D, and

carrying aniinclined or drunken saw at one end thereof, in combinationwith the detachable. head or`

